2

是否可以在下面的屏幕截图中检索“当前期间”下的值？

在此处输入图像描述

有没有办法以编程方式重置这个数字？

4

3 回答 3

1

您可以使用此扩展程序跟踪蜂窝和 wifi 数据使用情况

extension SystemDataUsage {

    public static var wifiCompelete: UInt64 {
        return SystemDataUsage.getDataUsage().wifiSent + SystemDataUsage.getDataUsage().wifiReceived
    }

    public static var wwanCompelete: UInt64 {
        return SystemDataUsage.getDataUsage().wirelessWanDataSent + SystemDataUsage.getDataUsage().wirelessWanDataReceived
    }

}

class SystemDataUsage {

    private static let wwanInterfacePrefix = "pdp_ip"
    private static let wifiInterfacePrefix = "en"

    class func getDataUsage() -> DataUsageInfo {
        var ifaddr: UnsafeMutablePointer<ifaddrs>?
        var dataUsageInfo = DataUsageInfo()

        guard getifaddrs(&ifaddr) == 0 else { return dataUsageInfo }
        while let addr = ifaddr {
            guard let info = getDataUsageInfo(from: addr) else {
                ifaddr = addr.pointee.ifa_next
                continue
            }
            dataUsageInfo.updateInfoByAdding(info)
            ifaddr = addr.pointee.ifa_next
        }

        freeifaddrs(ifaddr)

        return dataUsageInfo
    }

    private class func getDataUsageInfo(from infoPointer: UnsafeMutablePointer<ifaddrs>) -> DataUsageInfo? {
        let pointer = infoPointer
        let name: String! = String(cString: pointer.pointee.ifa_name)
        let addr = pointer.pointee.ifa_addr.pointee
        guard addr.sa_family == UInt8(AF_LINK) else { return nil }

        return dataUsageInfo(from: pointer, name: name)
    }

    private class func dataUsageInfo(from pointer: UnsafeMutablePointer<ifaddrs>, name: String) -> DataUsageInfo {
        var networkData: UnsafeMutablePointer<if_data>?
        var dataUsageInfo = DataUsageInfo()

        if name.hasPrefix(wifiInterfacePrefix) {
            networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer<if_data>.self)
            if let data = networkData {
                dataUsageInfo.wifiSent += UInt64(data.pointee.ifi_obytes)
                dataUsageInfo.wifiReceived += UInt64(data.pointee.ifi_ibytes)
            }

        } else if name.hasPrefix(wwanInterfacePrefix) {
            networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer<if_data>.self)
            if let data = networkData {
                dataUsageInfo.wirelessWanDataSent += UInt64(data.pointee.ifi_obytes)
                dataUsageInfo.wirelessWanDataReceived += UInt64(data.pointee.ifi_ibytes)
            }
        }
        return dataUsageInfo
    }
}

struct DataUsageInfo {
    var wifiReceived: UInt64 = 0
    var wifiSent: UInt64 = 0
    var wirelessWanDataReceived: UInt64 = 0
    var wirelessWanDataSent: UInt64 = 0

    mutating func updateInfoByAdding(_ info: DataUsageInfo) {
        wifiSent += info.wifiSent
        wifiReceived += info.wifiReceived
        wirelessWanDataSent += info.wirelessWanDataSent
        wirelessWanDataReceived += info.wirelessWanDataReceived
    }
}

用法 ：-

 SystemDataUsage.wifiCompelete
于 2019-04-25T11:32:58.873 回答
0

您可以在使用应用程序时跟踪数据使用情况。当您的应用程序未运行时，您无法访问下载信息。出于安全原因，iOS 会阻止它。您可以将 200MB 的值保存到 NSUserDefaults 或其他持久存储中。然后您可以在应用启动时重新加载该数据。

请看一下IOS的后台运行

于 2017-10-28T06:21:08.420 回答
0

目前有一种方法可以访问屏幕截图中提供的信息。我能想到获取这些蜂窝使用数据的唯一方法是创建个人 VPN 并通过它传输所有传入和传出数据。这样您就可以跟踪特定应用程序使用的数据！

看看这个：https ://developer.apple.com/documentation/networkextension/nevpnmanager

于 2018-04-03T14:39:50.743 回答